Paulownia board panel, Mizuhoshi, sumi ink, gold sumi ink, silver sumi ink, used. The drawing is done directly on paulownia wood panel. Washi paper is not used. The black of the batuku is sumi ink. The frame is painted with sumi ink. The back is coated with water-based urethane varnish. Nihonga" is based on a style of painting that has existed for more than 1000 years, and uses traditional materials that have been cultivated throughout history. It is a technique of painting on Japanese paper, silk, wood, etc., using natural paints such as sumi ink, iwa-enogu (mineral pigments), gofun (gofun), etc., and glue (nikawawa) as an adhesive. Gold and other metal materials (gold leaf, etc.) are also used. Iwa-enogu, made from ores, is a beautiful, sand-like powder. Mizuhigure, made from clay, is a fine, stretchy paint with fine particles. Artificial versions of iwa-enogu and mizuhoshi egur are also made, and are available in a wide variety of colors. Goko, made from shells, is a white pigment with fine particles.
